Ramón Allende Padín (19 March 1845 – 14 October 1884), nicknamed El Rojo ("The Red"), was a Chilean physician and political figure. The author of several important scientific publications, he also headed the Chilean Army's medical services during the War of the Pacific. Allende was of Basque descent.
The son of José Gregorio Allende Garcés and Salomé Padín Ruiz, Allende was born in Valparaíso. He studied at the Liceo de Valparaíso and the Instituto Nacional before graduating, on 20 June 1865, from the Universidad de Chile as a physician specializing in obstetrics and surgery. He was an assistant professor of the School of Medicine, becoming a full professor in November 1865.
In 1870 he became the Chief Doctor of Valparaíso's emergency public hospital, the Hospital de Sanidad. He also worked with Professor Wenceslao Díaz and at the San Borja and San Vicente de Paul hospitals. In 1875 President Federico Errázuriz Zañartu appointed him to the Public Welfare Committee, charged with a reforming brief. Allende joined the Radical Party and was in 1876 elected as deputy for Santiago. He was reelected in 1879, this time for Copiapó and Caldera. He also served from 8 December 1879 to 1 November 1880 as chairman of the Council on Public Hygiene.
On 28 September 1880, during the War of the Pacific (1879–1884), Dr Allende was appointed Superintendent of the Army Medical Services. During this time he attended the troops as chief medical officer in charge of the Ambulance Service (an "ambulance" at the time was a mobile hospital of about 20 beds, equipped for the performance of emergency field surgery). As such he is considered to be the founder of the Chilean Army Medical Corps.
Allende headed the "Justice and Liberty" Masonic Lodge and was a notorious enemy of the Catholic Church, which excommunicated him. He was also editor of the newspapers Guía para el Pueblo ("The People's guide") and El Deber ('"Duty'"). He was nominated as a member of the Public Instruction Committee and in this role he founded several schools, among them the Blas Cuevas School in Valparaíso, the first masonically controlled school. He was also a director of the Corps of Firemen.